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Extraction of clayey rocks

Extraction of clayey rocks

Clay is principally used in Switzerland as raw material for bricks. Clays are fine-grained products of weathering of other types of rock. Basically, a difference is made between transported sediments and «in situ», i.e. in place, products of weathering. Raw material properties and the formation of the deposits are influenced by the origin of the materials and the transport mechanisms, by the